ABB 3AFP 9874584 Labyrinth Seal Position 15 for AMG 1120LS08 LSE Generator

ABB 3AFP 9874584 labyrinth seal, specifically designed for ABB AMG 1120LS08 LSE series medium and high voltage generators/motors, installed at position 15, adopting non-contact labyrinth seal structure, achieving efficient sealing through multi-stage labyrinth gaps, effectively preventing lubricating oil leakage and external dust, moisture, impurities from entering the motor interior, protecting windings and bearings, excellent sealing performance, wear-resistant and durable, no lubrication requ

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Product Details

I. Product Overview

The ABB 3AFP 9874584 is a labyrinth seal manufactured by ABB, specifically designed for the ABB AMG 1120LS08 LSE series medium and high voltage generators/motors, installed at motor position 15. A labyrinth seal is a type of non-contact dynamic seal that achieves sealing function through a multi-stage labyrinth gap structure, widely used in shaft end sealing of rotating machinery such as generators, motors, steam turbines, compressors, etc.

Unlike traditional contact seals (such as oil seals, packing seals), labyrinth seals adopt a non-contact design, maintaining a tiny gap between the seal and the rotating shaft without direct frictional contact, thus offering advantages such as no wear, no lubrication required, long service life and reliable operation. The labyrinth seal achieves effective sealing through a combination of multi-stage throttling gaps and expansion chambers, causing multiple throttling and energy dissipation of fluid as it passes through the labyrinth passage, effectively preventing lubricating oil from leaking out of the bearing housing while blocking external dust, moisture, corrosive gases and impurities from entering the motor interior, protecting motor winding insulation and bearings, ensuring safe and stable motor operation.

The ABB AMG series medium and high voltage generators/motors (AMG COMPACT) are high-performance rotating machines specifically designed by ABB for engine and genset manufacturers, covering frame sizes 0710, 0900, 1120, etc., with maximum output power up to 20MVA, widely used in electric utilities, decentralized power plants, district heating, industrial captive power plants, marine electric propulsion and other fields. The AMG 1120LS08 LSE is a medium and high voltage generator/motor with frame size 1120, featuring modular end-shield bearing design, asymmetric cooling system, delivering stable and reliable performance. The 3AFP 9874584 labyrinth seal is the dedicated sealing spare part for position 15 of this series of motors, serving as a common replacement part for periodic motor maintenance and overhaul.

II. Specifications

表格

Parameter	Value
Brand	ABB
Part Number	3AFP 9874584
Product Type	Labyrinth Seal
Sealing Method	Non-contact labyrinth seal
Mounting Position	Position 15
Compatible Motor Model	AMG 1120LS08 LSE
Compatible Motor Series	AMG Series Medium and High Voltage Generators/Motors
Frame Size	1120
Sealing Function	Prevent lubricating oil leakage, block external impurities from entering
Material	Contact via email for confirmation
Number of Labyrinth Stages	Contact via email for confirmation
Inner Diameter (Shaft Diameter)	Contact via email for confirmation
Outer Diameter	Contact via email for confirmation
Width/Thickness	Contact via email for confirmation
Sealing Gap	Contact via email for confirmation
Operating Temperature	Contact via email for confirmation
Pressure Resistance	Contact via email for confirmation
Sealing Medium	Lubricating oil/air
Mounting	Insert mounting/bolt fixing
Applicable Standards	Complies with ABB rotating machine related technical standards
Dimensions	Contact via email for confirmation
Weight	Contact via email for confirmation
Country of Origin	Contact via email for confirmation

III. Product Features

ABB original quality, specifically designed for AMG 1120LS08 LSE generator/motor, perfect match
Non-contact labyrinth seal structure, no frictional wear, no lubrication required, long service life
Multi-stage labyrinth gap design, excellent sealing performance, effectively preventing lubricating oil leakage
Blocks external dust, moisture, corrosive gases and impurities from entering the motor interior
Protects motor winding insulation and bearings, extending motor service life
Reliable operation, no contact wear, low maintenance cost
Adapts to high-speed rotating conditions, stable sealing performance
Manufactured with high-quality materials, wear-resistant, corrosion-resistant, high temperature resistant
Precise dimensions, perfect fit with motor housing and shaft, easy installation
Dedicated sealing spare part for periodic generator/motor maintenance and overhaul
ABB quality assurance, reliable performance, safe and durable

IV. Typical Applications

AMG 1120LS08 LSE generator/motor periodic maintenance
Motor shaft end seal replacement
Generator/motor inspection and overhaul
Motor bearing housing seal maintenance
Motor winding insulation protection
Power plant generator set preventive maintenance
Marine electric propulsion system motor maintenance
Industrial captive power plant motor overhaul
District heating power plant motor maintenance
Decentralized power plant motor maintenance

V. Model Description

3AFP 9874584 is the complete part number for the ABB labyrinth seal. Where:

3AFP: ABB rotating machine spare part number prefix
9874584: Specific part number
Labyrinth Seal: Product type description
Position 15: Mounting position identifier
AMG 1120LS08 LSE: Compatible generator/motor model

ABB provides complete spare parts and maintenance kits for the AMG series generators/motors, including labyrinth seals, bearings, oil seals, windings, cooling system components, etc., to support full lifecycle maintenance of motors. Motors with different frame sizes and configurations use different spare part numbers, and matching spare parts must be selected based on the specific motor model, configuration and mounting position. Labyrinth seals typically have different part numbers depending on the mounting position (such as drive end, non-drive end, bearing housing inner/outer side, etc.).

To confirm the detailed dimensional parameters (inner diameter, outer diameter, width), material specifications, number of labyrinth stages, installation guide, replacement cycle and compatibility information for this labyrinth seal, please contact via email for confirmation. We will provide detailed technical documentation and technical support.

VI. Why Choose Us

Professional channel supply, comprehensive model coverage across multiple brands of industrial spare parts
Strict quality inspection process ensuring reliable product quality
Professional engineering team providing technical support and selection consultation
Quick response, efficient logistics, orders accepted
Quality assurance, worry-free after-sales service

VII. FAQ

Q1: What motor model is the 3AFP 9874584 labyrinth seal compatible with?

A: This labyrinth seal is specifically designed for the ABB AMG 1120LS08 LSE series medium and high voltage generators/motors, installed at motor position 15, for shaft end sealing to prevent lubricating oil leakage and external impurities from entering the motor interior.

Q2: What is the difference between labyrinth seals and contact oil seals?

A: Labyrinth seals adopt a non-contact design, maintaining a tiny gap between the seal and the rotating shaft without direct frictional contact, offering advantages such as no wear, no lubrication required, long service life and reliable operation, suitable for high-speed rotating conditions; contact oil seals (such as lip seals) achieve sealing through direct contact between the sealing lip and the shaft, with better sealing effect but wear, requiring periodic replacement, suitable for medium and low speed conditions.

Q3: How often do labyrinth seals need to be replaced?

A: Labyrinth seals are non-contact seals without frictional wear, theoretically having a longer service life. However, in actual operation, factors such as dust accumulation, corrosion, thermal deformation, improper installation may cause increased sealing gap or seal damage. It is recommended to inspect the condition of labyrinth seals during periodic motor maintenance, and decide whether to replace based on actual wear and sealing performance. It is generally recommended to inspect or replace labyrinth seals during motor major overhaul.

Q4: Can you provide an installation guide for this labyrinth seal?

A: Yes. Please contact via email with your requirements, including the motor model and operating conditions, and we will provide corresponding installation guides, replacement procedures, precautions, gap adjustment requirements and technical support. It is recommended that the replacement be performed by professional electrical/mechanical personnel.

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